SiteMinder APIs

SiteMinder offers five APIs covering different integration types and use cases. Use the table below to find the right API for your system, then follow the link to its full documentation.

Which API to use?

If you are...	Use this API	Protocol
Property Management System (PMS)	pmsXchange	SOAP + REST
Revenue Management System (RMS)	pmsXchange + SMX	SOAP + REST
Booking Channel - direct hotel contracts	SiteConnect	SOAP
Booking Channel - broad property access	Channels Plus	REST
Application	SMX	SOAP + REST
Property / Hotel Group	Direct Booking	REST

pmsXchange

For: Property Management Systems (PMS) and Revenue Management Systems (RMS)

PMS partners use pmsXchange to synchronise availability, restrictions, rates, and reservations between your system and SiteMinder.

RMS partners use pmsXchnage alongside SMX — pmsXchange handles rate and restrictions sync, while SMX provides the reservation data layer .

→ View the pmsXchange API

SiteConnect

For: Booking channels, OTAs, wholesalers, and distribution partners with direct hotel contracts

Receives availability, restrictions, and rates from SiteMinder and sends reservations back in real time. SiteConnect is a two-way push API — SiteMinder pushes ARI updates to your system, and you push new, modified, and cancelled reservations back. Access is limited to properties you have a direct contract with.

→ View the SiteConnect API

Channels Plus

For: Booking channels and distribution partners seeking access to a broad set of SiteMinder-connected properties

Search properties, retrieve availability and pricing, and manage reservations via REST APIs. Unlike SiteConnect, Channels Plus gives you access to all SiteMinder-connected properties that have opted in — without requiring direct contracts with each property.

→ View the Channels Plus API

SMX

For: Applications and Revenue Management Systems (RMS)

Provides access to reservation data from SiteMinder to power your product. Common use cases include analytics tools, pricing and revenue optimisation, guest experience platforms, upselling tools, and operational management products.

RMS partners use SMX alongside pmsXchange — SMX provides the reservation data layer, while pmsXchange handles rate and restrictions sync.

→ View the SMX API

Direct Booking

For: Properties and hotel groups building direct booking experiences

Build direct booking engines using real-time availability, restrictions, rates, and property data from SiteMinder. Designed for properties and hotel groups that want to power their own booking interface without relying on third-party channels. Limited to multi property SiteMinder customers.

→ View the Direct Booking API

Still have questions?

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If you need more support, visit Integration Support.